lircReceiver.py

#!/usr/bin/python
# -*- coding:utf-8 -*-
import RPi.GPIO as GPIO
import time
PIN = 17;

GPIO.setmode(GPIO.BCM) 
GPIO.setup(PIN,GPIO.IN,GPIO.PUD_UP)
print("irm test start...")

def exec_cmd(key_val):
    if(key_val==0xca):
        print("UP")
    elif(key_val==0xd2):
        print("DOWN")
    elif(key_val==0x99):
        print("LEFT")
    elif(key_val==0xc1):
        print("RIGHT")
    elif(key_val==0xce):
        print("OK")
    else:
        print("Unknown KEY: 0x%02x" %key_val) 
try:
    while True:
        if GPIO.input(PIN) == 0:
            count = 0
            while GPIO.input(PIN) == 0 and count < 200:
                count += 1
                time.sleep(0.00006)
            count = 0
            while GPIO.input(PIN) == 1 and count < 80:
                count += 1
                time.sleep(0.00006)
            idx = 0
            cnt = 0
            data = [0,0,0,0]
            for i in range(0,32):
                count = 0
                while GPIO.input(PIN) == 0 and count < 15:
                    count += 1
                    time.sleep(0.00006)
                count = 0
                while GPIO.input(PIN) == 1 and count < 40:
                    count += 1
                    time.sleep(0.00006)
                if count > 8:
                    data[idx] |= 1<<cnt
                if cnt == 7:
                    cnt = 0
                    idx += 1
                else:
                    cnt += 1
            if data[0]+data[1] == 0xFF and data[2]+data[3] == 0xFF:
                 #print("Get the key: 0x%02x" %data[2])
                 exec_cmd(data[2])
except KeyboardInterrupt:
    GPIO.cleanup();